This example shows an organizational network of four main nodes connected to numerous child and leaf nodes, with drag interactions repositions the nodes in real time. The graph uses a force-directed layout via `d3.forceSimulation` with `forceManyBody` and `forceLink`. Custom drag behavior is implemented with `d3.drag` to set fixed node positions (`fx`, `fy`) and restart the simulation. Nodes and links are rendered as SVG circles and lines, styled with colors from a generated palette. The data structure defines node sizes and link distances, with labels shown as SVG text.